US Based Fluoride Alert has good information on arthritis and skeletal fluorosis. Below are some NZ based articles.
Is your arthritis really skeletal fluorosis?
See Case Study Published in NZ Medical Journal by Dr Michael Godfrey, Tauranga, 4th May 2018
New Evidence of Harm to New Teeth and Old Bones
John Colquhoun BDS MPhil PhD Dip Ed, Honorary Research Fellow, University of Auckland
21st May 1991
Pure Water Journal